Saw-sharpening machine.



M. WAGNER.

SAW SHARPENING MACHINE.

APPLICATION FILED IAN. Ia. 1915.

QN NWN M. WAGNER.

SAW SHARPENING MACHINE.

APPLICATION FILED JAN. I3. 1915.

Patented Sept. 21, 1915.

3 SHEETS-SHEET 2.

M. WAGNER.

sAw SHARPEN'ING MACHINE.

APPLICATION FILED JAN. 13. 1915.

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end being in engagement with a spring 41, mounted between said lever andthe frame, the tension of the spring being adjustable by regulating ascrew 41". The upper end of the post 37, is reduced to form a stem,which extends through a slot 45, in a lever 46, pivoted to standard 30,extending from the iframe, and on the inner end or" said lever, is

Y a roller 48, which engages the upper surface of the slide 10, a spring48, being interposed between the lever 46, and a shoulder on the post37. The object ofthis construction is to tilt the slide downwardly tocause the file to engage with the tooth in the sharpening operation, itbeing evident that upon operation Yof the cam 6, the lever 46 will be sotilted as to engage the slide 10, and hold the ile in position in thesaw teeth.

The base 1, is Jformed with an arcuate slot 50, and pivoted to saidbase, adjacent the slot, at 51, is a swinging saw carrying frame 52,same comprising upper and lower plates 53,7whichA engage the lupper andlower surfaces of the base 1, and extending vthrough `the slot 50, andconnecting the upper and lower plates, is a bolt 54, to clamp the frame.

in adjusted position; Depending ronrthe lower plate 58, is a bar 55,slotted at 56, and provided at its lower end with a cross bar 57.

" Operating in the slot-56, is a slide block y58, v'formed with sidegrooves 59, inwhich iii the 'walls of the slot 56.v The block 58, isformed with a slo-t in which is a collar 60, secured to a screw 61, thelatter engaging a threaded opening 62, formed in the cross bar 57, sothat by turning the screw, the block 58, may be adjusted vertically, ineither di rection. Extending from the block 5S, isa

screw 63, having a thumb nut 64, and a bushing 65, which engages anopening formed in a circular saw 66.

lBy adjusting'the bolt 54, the frame can be turned at an angle to thelongitudinal axis ofthe file, and by adjusting the screw '161, the sawcan be raised or lowered, wherelscrew 72, which engages a stud 7 3,projecting from the slide 74, suitably mounted on the base 1. The innerend of the slide is positioned to be engaged by the cam 7, when thewheel4, rotates, consequently the leverv g 71, is rocked laterally withreference to the longitudinal axis of the file. On the outer end ofthelever 71, is a pawl 7 6, which engages the teeth of the saw, torotate the latter to present the succeeding teeth to the file .in theoperation of the machine.

The pawl 76, is formed with an elongated opening 77, a screw 78X,extending through said opening to fasten the pawl to the lever 71, theelongated slot permitting of the pawl being Ytilted that it may beproperly' positioned the drawings.

y82, to draw the pawl against a liange l78 formed on each slide 78a, asclearly shown in Two of these slides are provided so as to brace thepawl when it is turnedV to the right or left of its pivot, and the`lever 71 is formed with several openings 63, to receive the screws ofthe slide, so as to adjust the position of the pawl with refer,- encetothe saw.

In operation, a circular saw is mounted on the bushing 65, and isclamped against the block bythe wing nut 64, the angular position of thesaw being determined by the adjustment of the standard through themedium of the bolt 54, as previously explained, the angle of the sawbeing set, according to the desired anglevof the cutv of ythe teeth. Thesaw having been set, the file is adjusted in the slide, and uponrotation of the shaft, and when the various cams engagetherespectivelevers,rthe iile is moved in one direction of itsreciprocation in engagement with the saw, and in its other movement,

said file is elevated, and the pawl rotatesy the saw one tooth. y Y

Assume the cam 5', is in engagement with the lever 26, the slidecarrying the ile isl elevated above the saw, and the wheel 4, is

carrying the file back preparatory tomaking. the next or liling strokeon the tooth. Atk

this time, the cam 7, engages thev end of the slide 78, and rocks thelever 71, on its pivot V70, and thereby pawl 76 is caused lto engage oneof the teeth of the saw, vand the latter is rotated to remove thepreviously sharpened'V tooth from under the `file, and to presentanother tooth to said lile to be sharpened] About at 'the time ofcompletion of the idle stroke of the iile caused by the action of cam 5,cam 6 engages its coperating camv lever and elevates the end of rod 46,and causes the roller at the i'ree end of the latter to force the slide,consequently-the file, down into engagement with the saw for the sharp-vening operation,rexcess movement or pressure on said arm 46 beingrelieved by means of the spring 48a. Of course, the cam 7 has passed theend of the' slide 73, and the spring 71a, has returned pawl" 76, toitsnormal position. j Y

Upon continued rotation of the shaft 3, the operation ofl the ,partsdescribed con? tinues, and the ile is reciprocated and a new tooth ispresented. v e

If it be desired to iile the teeth at an angle, the standard 55, isadjusted, and also the lio pawl 76, is likewise adjusted, so that in themovement of the file, an angular cut is made on the tooth.

What I lclaim is l. In a saw sharpening machine, the combination of aframe, a shaft mounted on the frame, a wheelon the shaft, cams rotatablewith said shaft, a saw support, a rod on the frame, a slidingl framemounted on the rod and carrying a file to engage the teeth of a saw onthe saw support, a connecting arm between thel wheel and the slide toreciprocate said slide, a series of levers between one of the cams andthe slide to rock said slide on the rod and the file carried thereby indirection of the saw tooth being sharpened, and a system of levers, one.of which engages the under side of the slide to rock the latter on therod and the file upwardly and away from the saw tooth, one of the latteron the rod system of levers being operated upon by one of the cams. y

2. In a saw sharpening machine, the Icombination of a frame, a shaftmounted in the frame, a wheel on said shaft, cams rotated when saidshaft is rotated, a guide bar, a slide slidably mounted on the guidebar, standards extending from the slide, one of said standards havingr asocket, the other said standard having oppositely disposed lugs formedwith threaded openings, screws fastened through said openings, anadjustable socket member mounted in the standard and with which thescrews engage to hold the end of the file and adjust the latter towardand from the slide, a connection between said slide and the wheel, asupport to receive a saw being operatd on by the lfile, means forrotatably adjusting the said support, means in the support forvertically adjusting a saw, means including a system of levers, one ofwhich bears on the slide'to force the file in contact with thetoothbeing sharpened, said levers being operated by one of the cams, a secondsystem of levers, one of which engages under the slide to elevate thelatter and operable by one of the cams, a pawl for rotating the saw, andmeans between one of the cams and the pawl for operating the latter. Q

3. In a saw sharpening machine, the combination of a frame, a sawsupport mounted on the frame, means for adjusting the saw vertically,means for angularly adjusting the saw on the support, a slide forcarrying a file, means for reciprocating the slide, a pivoted leverengaging the side of the slide to elevate the file from a saw tooth,means for operating said pivoted lever, a second pivoted lever forlowering the slide to bring the filev into Contact with the saw tooth, alever and post to operate said second mentioned lever, and a spring torelieve the strain on the slide when same is lowered.

4. In a saw sharpening machine, the combination. of a frame, a shaftlmounted on the frame, a wheel carried by the shaft, a saw support onthe frame, a slide carrying a file, a connection between the slide andthe wheel to reciprocate said slide, an arm to elevate the slide, alever connected to the arm, a cam on the shaft to operate the lever, asecond arm engaging the upper surface of the slide to lower the latter,a second lever for operating the second mentioned arm, a cam on theshaft for operating the second mentioned lever, a lever mounted on theframe to move at right angle to the movement of the aforesaid levers, ahorizontal slide between said horizontal lever andthe cam on the wheelto oscillate said horizontal lever, a pawl on the oppositerend of saidhorizontal lever, means for mounting said pawl to move horizontally andlaterally, gages on the horizontal lever against which the pawl engages,a spring between one of said gages and the pawl to hold' the latter inangular position, and a spring for operating said horizontal lever toreturn it to normal position after the saw has been moved.

5. In a saw sharpening machine, the combination of a frame, a sawsupport mounted on the frame, means for adjusting the saw vertically,means for angularly adjusting the saw on the support, a tiltable filecarrying slide, means for reciprocating the slide, means for tilting theslide to elevate the file from the saw tooth, means for tilting theslide in the reverse direction to bring the file into contact with thesaw tooth, and means to relieve the strain on the slide when same isbrought into contact with the saw tooth.

6. In a saw sharpening machine, the combination of a frame, a sawsupport having vertical guides and mounted on the frame, a slidableblock mounted in the vertical guides, means for mounting a saw on theblock, a screw for vertically adjusting the block in the guides, meansincluding a slot and bolt between the support and frame to angularlyadjust the saw support, a tiltable file carrying slide, means forlreciprocating the slide, means for tilting the slide to elevate thefile from the saw tooth, means for tilting' the slide in the reversedirection to bring the file into contact with the saw tooth, and meansto relieve the strain on the slide when the same is brought into contactwith the saw tooth.

7 In a saw sharpening machine, the combination of a frame, means foradjustably mounting a saw on the frame, a tiltable file carrying slide,means for reciprocating the slide, means for tilting the slide toelevate same away7 from a saw being operated upon, means including apivoted lever for tilting the slide in the reverse direction to lowerthe slide to the saw, a spring engaging the pivoted lever to remove theshock from the saw when the le engages a tooth, and means for rotatingthe saw intermittently to present the teeth to the file to be sharpened.

8. In a saW sharpening machine, the conibination of a frame, means foradjustably mounting a saw on the frame, a rotating cam, a pivoted pavvlcarrying lever, an adjustable abutment on the lever, a paWl looselymounted on said lever and seated against the abutment, a spring forholding the pawl against the abutment, means for adjusting the positionof the paWl, means between the lever and the cam to adjust the position'of the paWl With reference to the savv tooth, a tiltable file carryingslide, means for reciprocating the slide, means for tilting the slide tooperate upon a saw tooth, means for reversely tilting the slide toelevate the le from the saw tooth, and an adjustable file holder carriedby the slide.

9. In a saw sharpening machine, the combination of a support for a saw,means for intermittently rotating a saw, a iile carrying slide, meansfor reciprocating the slide, an adjustable iile holder carried: by theslide, a pivoted horizontally disposed lever engagingthe top of theslide, a pivoted horizontally disposedV lever engaging the bottom of theslide, a spring acting to absorbthe shock and strain of said two leverswhen the slide is tilted, means for operating the first mentionedhorizontally disposed lever, and means for operating the secondmentioned horizontally disposed lever.

In testimony whereof I have signed my name to this speciication in thepresence of two subscribing Witnesses.

MATT WAGNER.

Witnessesz Y JOHN Y. SMITH, D. K. JOHNSTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washngton,D. C.

